[datahopper] Extend BigTable query timeout for event metrics
[datahopper] Extend BigTable query timeout for event metrics

Change-Id: I6af0e57b9552bac59071fe491d261a15be44d7ac
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/207863
Reviewed-by: Ben Wagner aka dogben <3ef7217be91069877d94f7907ce5479000772cd3@google.com>
Commit-Queue: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot